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Infiniti Q30 Concept uncovered in Frankfurt

The curtain has officially been raised on the Infiniti Q30 Concept at the Frankfurt Motor Show, an oft-teased five-door hatchback that will move the neo-luxury brand downmarket to compete with the Audi A3 and Mercedes-Benz CLA-Class. Not only is Infiniti moving down market, it's targeting a younger audience, a field that it hasn't traditionally played in, that wants something different than a hum-drum luxury car. According to Infiniti's marketing director, Hugues Fabre, "Younger customers are coming into the premium segment with their own attitude toward premium-ness."
Infiniti's trademark styling elements are on full display here, from the radically kinked C-pillar and Q50-inspired headlights and grille, to the dramatic character lines on the profile. In the cabin, it looks like an extraterrestrial disco, with a lot of violet lighting, bronzed touchpoints and creamy leather. Ignore the concept car tinsel, though, and you'll see that Infiniti is dead serious when it says the Q30 foreshadows a production model.
We'll have plenty more of the Infiniti Q30, including live images from the 2013 Frankfurt Motor Show floor, very soon. Until then, click over to our Frankfurt coverage page, scroll down for a full press release on the Q30, or click over to the high-res gallery.

Infiniti's new VC-T changes the rules of small turbocharged engines

The upcoming Infiniti QX50 crossover does not get our pulse racing, no matter how shapely the QX Sport Inspiration concept that previews it may be. No midsize SUV does, to be fair. But it has something special under the hood – the world's first production variable-compression-ratio engine. That means the QX50's 2.0-liter turbo four, which makes 268 horsepower and 288 pound-feet of torque, will have up to 27 percent better fuel economy. Here's how it works. The trend of moving to smaller, turbocharged engines carries with it one big falsehood. Under low load when the turbo isn't needed, these engines are less efficient than an equivalent engine without a turbo because of the low compression ratio the turbo requires. That is, if you never need the extra power, you're wasting fuel. Turbocharged (and supercharged) engines use a lower compression ratio to prevent detonation. When you force extra air in a cylinder and mix it with fuel, it's more likely to prematurely go boom. Lowering the compression ratio prevents this problem, but it's less efficient. Infiniti's VC-T promises the best of both worlds, with a compression ratio that ranges from 8.0:1 for high-power turbo needs to a 14.0:1 ratio for fuel-sipping efficiency. At its heart the VC-T engine is a simple idea, but it's complicated to explain. Consider yourself warned. The photo below from Infiniti serves as a good visual overview. For the truly nerdy, this patent application covers the mechanical concept. Instead of having the pistons connected to the crankshaft, Infiniti's engine has a pivot arm with a connection on each end. One end connects to the piston, the other connects to a second lower shaft, which is controlled by an actuator arm. At any given time the engine's pistons move up and down according to the lobes on the crankshaft. But the actuator arm can change the angle of the pivot arm up and down. That is, the pistons still move in the same motion with the same stroke, but phase the entire stroke up or down. Move the pivot up and there's less room at the top, which means a higher compression ratio. Move the pivot down and the compression ratio goes down, too. As an added bonus, the lower shaft eliminates the need for counter-rotating balance shafts. Infiniti says this system works constantly and can vary the compression ratio to any number between 8:1 and 14:1. It also uses electronic variable valve timing on the intake valves to switch into Atkinson-cycle combustion for greater efficiency.

Infiniti QX60 AWD vs. Mazda CX-9 Signature

In certain ZIP codes around Dallas, Chevy's Suburban remains the Official SUV of Texas, but Infiniti's QX60 could be the Official Crossover. The Pathfinder-based three-row is everywhere. And while its popularity is based on transporting kids and their stuff, the QX60 is a more urban Suburban. Mazda's CX-9 is not as ubiquitous as the QX60 in McMansion driveways, but it has been making inroads into the near-luxury segment with its near-luxury spec. The CX-9's second generation has obviously upscale intent, in the sheetmetal and throughout the top-line Signature interior. And the prices of these two cars are surprisingly close. INFINITI QX60 AWD: The sheetmetal differentiating Infiniti's QX60 from its volume-oriented Nissan donor is attractive. The changes are subtle, and in profile the Pathfinder and Infiniti are almost identical, but the eye is drawn to the differences in the grille and D-pillar. The Infiniti has a luxury vibe with a more athletic stance. The QX60's interior surfaces seem upscale, but if you want wood it will cost you. In "building our own" and opting for graphite leather with maple trim, the wood requires another $12,000(!) of mandatory packages, including Infiniti's Premium and Premium Plus packages ($1,800 and $2,900, respectively) and $7,300 of Deluxe Tech. So, wood? We wouldn't. But if you do, know the QX60 won't match the larger QX80 in presence or passion, but it is certainly something beyond a rebadged Pathfinder. For you and your passengers, there is 156 cubic feet of interior room; with the second and third rows folded, you can accommodate 76 cubic feet of cargo. Like in most crossovers, that third row is best used by young kids, but taking six adults to lunch won't require too much gymnastics – or chiropractics. On the road, the QX60 is known more for comfort than composure; this isn't an old Buick, but neither is it a BMW. Nissan's 3.5 liter V6 produces generous power (295 horsepower and 270 pound-feet of torque), but it's transmitted to either the front wheels or all wheels via a CVT (continuously variable transmission). Nissan has tried to mitigate the quirkiness, but it's a CVT all the same. At a well-equipped base of $44,000, we like the QX60. But start adding options, and you can approach $60,000, which is real money even in the better ZIP codes. MAZDA CX-9 SIGNATURE: This, ladies and gentlemen, is dramatic. Mazda has absolutely nailed it. Using Mazda's KODO design language on a large platform could have gone wrong.